Sorry HRC, I beg to differ with you on this one. I did a ton of experimenting with clutches and springs and they will tell you , "Sure, Yes it will open all the way or close all the way but in reality, they don't. It is true that if you have both BRAND NEW clutches, it MAY close or open all the way (depending on which clutch) But my experience has taught me it doesn't.
Drive clutches(front) If the clutch is not worn much, the normal drive belt under full rpms will leave a gap at the top of about 1/8". With the power spring installed in the same clutch, that gap increases to 1/4"+
Driven Clutch (rear) This clutch opens all the way under full load. Wether worn or not. As long as that belt is newer, it function perfect. Now, put a power sping in this clutch and now it takes more to open it. The front clutch now has to work harder to pull down against the spring in the rear clutch. 2 things now happen, the front clutch now has a 1/2"+ gap in it and the rear clutch does not open all the way. You wear belts out in less than a year.
To get the drive clutch belt to the top, machining will need to be done so it can close more.
Personally, I no longer run a power spring in either clutch now. Doing 1/8th mile runs, I am faster with out them.
And yo know me HRC, I am all about the speed in these carts. Now, with the power springs, you will gain hill climbing abilities. Its because it keeps the belt low in front and high in the rear. Which is what you need to climb
